Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cham den snippets" » "hoi cham den snippets", "goi cham den snippets", "moc cham den snippets", "moi cham nen snippets", "moi thai den snippets", "moi chat deo snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("moi cham den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi cham den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cham den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cham den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.